What is a fractional CIO in the context of a Registered Investment Advisor (“RIA”)?

Definition: A fractional CIO is another name for an Outsourced Chief Investment Officer.

When used in an RIA context: “The RIA is not large enough to justify employing an in-house CIO, so they utilize a fractional CIO.”

See also: Outsourced Chief Investment Officer, OCIO, Vendors (OCIO)